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C35 Preset Valves

 
The C35 mechanical Preset Valve provides an accurate and automatic control of a predetermined quantity of liquid to be delivered through the flow meter. A typical preset arrangement consists of a Preset Valve mounted on the flow meter outlet and connected by a mechanical linkage to the preset register fitted below the flow meter counter.
C35 Preset Valves
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DESIGN FEATURES

• Compact design
• Accurate shut-off
• Low pressure drop
• Emergency stop facility
• Batch quantity upto 99,999 litres
• Bubble tight two stage cushioned closure
• Optional electrical preset switch for remote pump control

   
PRINCIPLE OF OPERATION
The C35 Preset Valve is of a pilot operated, hydraulically actuated design, which ensures an easy opening and two stage cushioned closure. It consists of a main valve and a pilot valve. The pilot valve is connected to the preset register through an adjustable linkage.

To commence operation, the required delivery quantity is set on the preset register with the help of push buttons. The flow meter counter is reset to zero. Liquid delivery is initiated by pulling the preset handle. This actuates the linkage to move the pilot valve, which drains the pressurised liquid in the main valve, causing a pressure drop across the main valve to open it (see figure 1).

At the end of the delivery, the preset register knock-off plate gets released in two stages, moving the linkage connected to it and allowing the main valve to gradually close in two stages (see figure 2).
   
APPLICATION
• Container filling
• Batching and blending operations in petroleum, chemical and process control industries
• Dispensing and inventory control
   
SPECIFICATIONS
 
PRESET VALVE
PRESET REGISTER
• Type : Pilot operated, hydraulically actuated
• Type : Veeder Root 7889
• Size : 40 mm NB
• Display : 5 digit resettable
• Flow Range : 350 lpm max
• Digit Size : Height 12.7 mm, width 6.8 mm
• Max. Working Pressure: 10.54 kg/cm2
• Push Buttons : Five (one for each wheel) One SET button on left side and One STOP button on right side
• Maximum Working : 10.54 kg/cm2
• Control : Mechanically linked with Preset Valve
• Temperature : Upto 70oC
• Mounting : On flow meter
• Mounting : On flow meter
• Control : Two stage cushioned shut-down
 
 
C35 Preset Valves
 
MATERIALS OF CONSTRUCTION
Valve Body : Aluminium alloy LM-25 (Standard)
Cast Steel ASTM A 216 WCB (Optional)
Stainless Steel AISI 316 (Optional)
• Rubber Parts : Nitrile (Standard) Viton (Optional)
• Other Wetted : Aluminium / Stainless Steel AISI 410
• Parts (Standard) Stainless Steel AISI 316 (Optional)
 
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